NOAA Weather Radio All Hazards transmitters broadcast on one of seven VHF frequencies from 162.400 MHz to 162.550 MHz. The broadcasts cannot be heard on a simple AM/FM radio receiver. However, there are many receiver options, ranging from handheld portable units which just pick upWeather Radio - to desktop and console models which receive Weather Radio in addition to other broadcasts.
-- NOAA Weather Radio All Hazards

NOAA Weather Radio now broadcasts warnings and post-event information for all types of hazards – both natural (such as earthquakes and volcano activity) and technological (such as chemical releases or oil spills). Working with other Federal agencies and the Federal Communications Commission’s new Emergency Alert System (EAS), NOAA Weather Radio is an "all hazards" radio network, making it the single source for the most comprehensive weather and emergency information available to the public.
-- Will County Emergency Management Agency